Fbedeeick stitzel and chaeles weinedel



(No Model.)

1?. STITZEL & O. WEINEDEL.

TELEGRAPH RELAY. No. 389,337. Patented Sept. 11, 1888.

l vi-vmooeo II. PETERS. Phal lifiho raphnn walmn mn, D. (L

NiTnn STATES Fries.

LATENT FREDERICK STITZEL AND CHARLES WVEINEDEL, OF LOUISVILLE, KENTUCKY, ASSIGNORS TO THE AMERICAN SEMAPHORE COMPANY, OF SAME PLACE.

TELEGRAPH=RELAY.

SPECIFICATION forming part of Letters Patent No. 389,337, dated September 11, 1888.

(No model.)

To all whom it may concern.-

Be it known that we, FREDERICK S'rrrzEL and CHARLES WEINEDEL, of Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Telegraph-Relays; and we do hereby declare the following to be a full, clear, and exact description of the invention,such as will onable others skilled in the art to which it appertains to make and use the same.

Our invention relates to an improvement in telegraphic relays.

The object of our present invention is to provide a relay which shall be simple in construction and sensitive in operation.

With this object in view our invention consists in certain novel features of construction and peculiar combinations and arrangements of parts, as will be hereinafter set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of our improved relay. Fig. 2 is an end view of the electromagnets.

A indicates a baseblock, of wood or other suitable material, having electro-magnets B mounted thereon, preferably near one end. Fixed upon the baseblock A, adjacent to the magnets B, is an upright or standard,C,which projects somewhat above the magnets B, and preferably bifurcated at its upper end for the reception and support of a lever, D. This lever D is pivoted at a point between its ends in the bifurcated upper end of the standard C, a pin, I), passing through the standard and lever, serving as the fulcrum for said lever.

Secured upon the arm a of the lever D is a pair of electro-magnets, E, these magnets being so placed upon the lever that their poles will be directly over the poles of the magnet B and within attracting distance thereof.

It will of course be understood that the magnets B E will be so arranged relatively to each other that the north pole of the magnetB will be in proximity to the south pole of the magnet E and the south pole of the magnet B within attracting distance of the north pole of the magnet E, so that when one or both magnets are energized the magnet E will be attracted to the magnet B.

Mounted upon a suitable post or standard, F, is an arm or. bracket, G, into which one end of the lever D projects. Adj usting-screws d c are passed through screw-threaded perforations in the bracket G, one above and the other below the end of the leverD, with which said lever is adapted to make electrical contact alternately, the screw d being in electrical con ncction with the bracket G and the screw 0 insulated therefrom in any suitable manner.

The lever D is provided in rear of its ful- 6o The approach of the mag- 6 the device is rendered very sensitive and cer- 7o tain of operation, the tension of the armature and its carrying-lever being regulated by slid' ing the weight H toward or away from the fulcrum-point of the lever. The coils of both magnets will be placed in the main circuit, 7

and therefore both magnets will be magnetized by the same current.

If the instrument be used as a single contact-relay, the local circuit-wires are attached to the lever D and to one of the adjustingscrews d (1; but when a double contact is desired there will be a wire of the local circuit attached to both adjusting-screws (Z e and to the lever D, suitable binding-posts being employed for making the several connections, if

desired.

It is evident that this device may be used as a telegraph-sounder by simply connecting the local battery-wires to the coils of the magnets B E.

Instead of employing the magnets B E in pairs, single magnets may be used, as desired.

Slight changes might be made in the con structive details of our invention without departing from the spirit thereof or limiting its 5 scope; hence we do not wish to limit ourselves to the precise details of construction herein described 5 but,

Having fully described our invention, what we claim as new, and desire to secure by Letters 1C0 Patent, is-

1. In a relay, the combination, with a stationary magnet andapivoted 1ever,of aweight ried by the lever at the opposite side of its on said lever at one side of its fulcrum and an fulcrum, substantially as set forth.

electromagneticarmature on the opposite side In testimony whereof we have signed this of said fulcrum, and having its pole in aplane specification in the presence of two subscrib- 5 with the pole of the stationary magnet, subing witnesses.

stantially as set forth. FREDERICK STITZEL.

2. In arelay, the combination, with an elec- CHARLES WEINEDEL. tro-magnet and a pivoted lever, of an adjust- Witnesses: able weight on said lever at one side of its ful- H. WARD S. BROWN, :0 crum and an electromagnetic armature car- GEO. V. LEBY. 

